Litchman DO, MS, G. H., R. M. Svoboda, and D. S. Rigel. “Is Absorption of Sunscreen Truly a Problem? A Careful Review Suggests It Is Not.”. SKIN The Journal of Cutaneous Medicine, vol. 3, no. 5, Sept. 2019, pp. 307-8, doi:10.25251/skin.3.5.2.